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| Subject | English | Norwegian (Nynorsk) |
| light. | actinic action spectrum of optical radiations, for a specified actinic phenomenon, in a specified system | aktinisk aksjonsspektrum |
| light. | luminescence emission spectrum | emisjonsspektrum |
| light. | equal energy spectrum | likeenergispekter |
| light. | equi-energy spectrum | likeenergispekter |
| light. | excitation spectrum for a monochromatic component of specified wavelength <.i>λ of the emitted radiation | eksitasjonsspektrum |
| light. | spectrum locus | spektrumlokus |
| light. | spectrum locus | spektrallokus |